According to the HTML 5 specification, the <b> tag should be used as a LAST resort when no other tag is more appropriate. The HTML 5 specification states that headings should be denoted with the <h1> to <h6> tags, emphasized text should be denoted with the <em> tag, important text should be denoted with the <strong> tag, and marked/highlighted text should use the <mark> tag.
One more fact is that old browsers don't know <strong> and <em>, so basically to be backwards compatible you should use <b> and <i>
Last edited by odedta; 05-23-2014 at 02:47 PM.
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